The Particle Density and Internal Strength of Japanese Cedar Base Pre-carbonized Solid Biofuel (Bio-coke) affected by Additional Cellulose and Alkali Lignin Compared with Additional Hemicellulose

This present research focuses on the improvement of the pre-carbonized solid biofuel, called Kindai Bio-coke. The bio-coke is currently applied in the large scale industry, such as the Cupola furnace of the steel industry, to reduce coal coke consumption. The properties involved with the permeability function need to be expressed in more detail to increase bio-coke consumption in the furnace. Two of the features, particle density and internal strength, of the Japanese cedar base bio-coke mixed with a single lignocellulose component (cellulose and alkali lignin) at 0, 2, 5, 8, 10, and 15 wt.% were studied. Results show that alkali lignin improves bio-coke properties significantly. The particle density of bio-coke with additional cellulose is increased in the range of 0 to 8 wt. % weight ratio and decrease afterward. Additional alkali lignin improves the bio-coke’s internal strength significantly at 10 and 15 wt. % ratio. In contrast, additional cellulose decreases the strength of bio-coke gradually.